PT-2026-37620 · Linux · Linux Kernel

Matthew Auld · Published 2026-05-06 · Updated 2026-05-06 · CVE-2026-43280

Positive Technologies (AI Summary)

CVSS v3.1

7.1

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An out-of-bounds kernel read can occur in the drm/xe component when a user provides an invalid pat index value through the madvise IOCTL. This happens because the madvise args are sane() function calls xe pat index get coh mode() without verifying if the pat index is within the valid range of the xe->pat.table array. While debug builds include a warning, production kernels still perform the unsafe array access.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2026-43280

Affected Products

Linux Kernel

References · 11

• https://ubuntu.com/security/CVE-2026-43280 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-43280 · Vendor Advisory
• https://git.kernel.org/stable/c/79f52655567a6471ff3d0d6325ede91bb14461f4 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-43280 · Vendor Advisory
• https://git.kernel.org/stable/c/ffba51100ff61792fefbae11ca38ac1987a818dd · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-43280 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-43280 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-43280 · Vendor Advisory
• https://git.kernel.org/stable/c/fbbe32618e97eff81577a01eb7d9adcd64a216d7 · Patch
• https://git.kernel.org/linus/fbbe32618e97eff81577a01eb7d9adcd64a216d7 · Note
• https://t.me/CVEtracker/52855 · Telegram Post